Improvement in machines for making dowel-pins



M. EVERTS. l Machinesfor Making Bowel-Pins.

CHARLOTTE EVERTS, OF GIRARD TOWNSHIP, ERIE COUNTY, PENNSYLVANIA, ADMINISTRATRIX OF MARTIN EVERTS, DEGEASED.

IMPROVEMENT IN MACHINES FOR MAKING DOWEL-PINS.'

Specification forming part of Letters Patent No. 135A 16, dated February 4, R73.

- blocks with square ends from these, and, by a continuous operation, force them through a former, to reduce them to the proper size. It is a frame of wood with the slabber xed on one side ofthe top, and a piuforming machine on the other.

Figure l represents the vertical view, showing pretty fully the entire machine; Fig. 2,1ongitudinal vertical section through .r x, with a side view of the pulley and crank wheel B and O 5 Fig. 3, longitudinal vertical section through y y, with side view of the pulley B and the l crank-Wheel C.

A A, frame of the machine; B, drivingpulley; O C', crank-wheels5 D D, timbers on the frame A to hold the bearings ofthe shaft of the pulley and cranks 5 E E', crank-pins; F and F', pitmen connecting the crank with the cross-head 5 I, groove in Awhich the slab is placed and forced along; I', wide groove, in which the bolt of wood is forced along by H to be split into slabs by knife K' 5 H, extension of the cross-head along the groove for the purpose of crowding the slab of wood under the knife K and into the former L. The succeeding block of Wood forces thc first one through the former L and completes the pin 5 K', knife, as high above the bottom of I' as the slab is to be thick 5 K, knife, as high above the bottom of I as the thickness of the slab 5 L, annular knife, having a bore of the diameter it is desired to have the pins; M, plate to hold the bar H in place; N, Fig. 2, shaft of the driving-pulley B and cranks O G' 5 O, passage-way for the pins to fall into the drawer P5 Q', bolt of wood to be split into slabs; Q, slab of wood on edge, to be split into square pieces and-formed into pins 5 R, block to hold the former L 5 G'H, crosshead, held in place by the slides J' J'.

Fig 3 'represents the slabber, and Fig. 2 the pin-former. Y

The crank-pins E E' are set on opposite sides of the shaft N, so that both machines will not use the Working-power at the same time.

The operation is as follows: In Fig. B the cross-head H' is drawn back until the bolt Q' will drop into the groove I', Fig. l. As the cross-head is driven through I' the bolt is forced against the knife K' and aslab is split off. This is followed by another, and they crowd each other oll of the platform where Fig. l is written. One of the slabs Q is then placed on edge; H is drawn back until the slab drops into groove I. The bar H then forcesit along and splits a square piece oft' and forces it partially into the annular" cutter or former L. The next piece forces it through L, and it falls through O into the drawer P.

I claim as the invention ofMARTiN EvEnTs, the decedent- The machine composed ofthe frame A, pulley and crank B O, connecting-bar F, slide H, knife K, and cutter L, all constructed and operated substantially as and for the purpose hereinbefore set forth.

CHARLOTTE EVERTS, Adm'imstmtrtr of ll/[artn Everts. IVitnesses:

J. W. WITMORE, B. F. CLARK. 

